diff --git a/emper/Blockable.hpp b/emper/Blockable.hpp
index c5abdcc9ed877d8a848123e1d73cc57e66e67f77..fa7019264be11def44de57ab3ed6087771c308ef 100644
--- a/emper/Blockable.hpp
+++ b/emper/Blockable.hpp
@@ -71,7 +71,7 @@ class Blockable : public Logger<logSubsystem> {
 		// Only contexts managed by EMPER's runtime can block.
 		emper::assertInRuntime();
 
-		LOGD("block() blockedContext is " << Context::getCurrentContext());
+		LOGD("block() blockedContext=" << Context::getCurrentContext());
 
 		maybeSetAffinity();
 
diff --git a/emper/Debug.hpp b/emper/Debug.hpp
index e2e781262669c776e0e9dce5b31a9a707d230c70..111ea7d6f62b2892ce2677737cfe151b93daaa95 100644
--- a/emper/Debug.hpp
+++ b/emper/Debug.hpp
@@ -134,9 +134,9 @@ class Logger {
 			case LogSubsystem::RUNTI:
 				return "RUNTI";
 			case LogSubsystem::SLEEP_S:
-				return "SLEEP_S";
+				return "SLEEP";
 			case LogSubsystem::WAKE_S:
-				return "WAKE_S";
+				return "WAKE ";
 			case LogSubsystem::U_B_MPSC_Q:
 				return "UBSCQ";
 			case LogSubsystem::IO:
diff --git a/emper/PrivateSemaphore.hpp b/emper/PrivateSemaphore.hpp
index b7e5f00c48b7a58d6f39400fb81dba562b5fe7de..49c4277b650715c6a831a901787f22d0d15e4fdb 100644
--- a/emper/PrivateSemaphore.hpp
+++ b/emper/PrivateSemaphore.hpp
@@ -17,7 +17,7 @@ class PrivateSemaphore : protected Blockable<LogSubsystem::PS> {
 	// cppcheck-suppress uninitMemberVar
 	PrivateSemaphore(emper::BlockablePurpose blockablePurpose = emper::BlockablePurpose::GENERIC)
 			: Blockable(*Runtime::getRuntime(), blockablePurpose) {
-		LOGD("constructed by fiber " << Dispatcher::getCurrentFiber());
+		LOGD("constructed by " << Dispatcher::getCurrentFiber());
 	}
 
 	virtual ~PrivateSemaphore() = default;